Sustainable Chemistry for the Environment最新文献

{"title":"Dye-laden sludge-derived biochar for wastewater remediation: A review on pyrolytic engineering, adsorptive interactions, and environmental prospects","authors":"Anshuman Gupta ,&nbsp;Sandra Ramachandran ,&nbsp;Neelaambhigai Mayilswamy ,&nbsp;Amrita Nighojkar ,&nbsp;Balasubramanian Kandasubramanian","doi":"10.1016/j.scenv.2025.100271","DOIUrl":"10.1016/j.scenv.2025.100271","url":null,"abstract":"<div><div>The persistent release of synthetic dyes from industrial effluents constitutes a substantial ecological and toxicological hazard owing to their persistent molecular structure and biological recalcitrance. This review presents a focused evaluation of biochar derived from dye-laden sewage sludge (DLSS-B), highlighting its potential as a low-cost, sustainable adsorbent for dye removal from wastewater. DLSS, a byproduct rich in organic matter, inorganic minerals, and residual dyes, is thermochemically converted into biochar through pyrolysis. A critical assessment is conducted on how variations in pyrolysis temperature, thermal ramping rate, and inert gas environment influence the resultant biochar’s specific surface area (reaching up to 405 m²/g), pore architecture, and surface functional chemistry. DLSS-B exhibits high adsorption capacities ranging from 200 to 405 mg/g for dyes such as malachite green and crystal violet, primarily through π–π stacking, electrostatic interactions, and hydrogen bonding. Chemical modifications, including acid/alkali activation and metal doping, further enhance its adsorptive performance. Regeneration studies show that DLSS-B can retain up to 92 % efficiency over five cycles, indicating strong reusability. Beyond dye removal, secondary applications such as soil amendment (non-food use) and energy recovery (∼20 MJ/kg) are discussed. This review emphasizes the integrated role of pyrolysis engineering, surface chemistry, and reuse strategies in developing DLSS-B as a viable material for industrial dye remediation.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"11 ","pages":"Article 100271"},"PeriodicalIF":0.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental risk assessment of sludge spreading in agriculture using toxicological thresholds representative of soil biological communities","authors":"Fulvio Onorati ,&nbsp;Andrea Tornambé ,&nbsp;Micol Bellucci ,&nbsp;Andrea Paina ,&nbsp;Chiara Maggi","doi":"10.1016/j.scenv.2025.100267","DOIUrl":"10.1016/j.scenv.2025.100267","url":null,"abstract":"<div><div>The reuse of sludge for agricultural purposes is one of the strategies used worldwide to reduce landfill disposal whilst restoring the fertility of the soil, in a circular economy approach. This agricultural practice in Italy is regulated by the Italian Legislative Decree (LD) No. 99 of January 27, 1992, which provides chemical limits for some substances and the maximum admissible quantities of sludge that could be spread. In the present work, a synthetic index for estimating the environmental risk associated with sludge spreading is developed and experimentally applied, simulating the spreading of five different sludges. Environmental Risk Index (ERI) was estimated by taking into account the legal limits and the Predicted No Effect Concentrations (PNECs), which were specifically derived to Italian soils in this study, considering toxicological data referred to biotic communities living in Italy. Spreading simulations showed a “possible” hazard with respect to limits under LD No. 99/1992, and a “moderate” hazard level with respect to PNECs, mainly due to Dioxins and Furans, and Ni respectively (within the parameters considered by law). Whereas further studies are needed to estimate PNECs for other substances such as Plant Production Products (PPPs) and pharmaceuticals in order to preserve the structure and the functions of the soil ecosystem, the application of ERI showed a discrepancy between the list of parameters laid down in the regulation and the list of the most important environmental parameters for which soil-specific PNECs were inferred, with respect to the biological communities present in Italy. Given that, the list of substances of interest to be searched for in sludge and soil should be the same, giving priority to those that show the greatest ecotoxicological risks, such as PFAS. The weighted and integrated approach used in this study goes beyond the classic tabular approach of simple legal chemical limits providing with a more realistic framework for an integrated environmental risk assessment.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"11 ","pages":"Article 100267"},"PeriodicalIF":0.0,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in microbial fuel cell technologies for bioremediation and energy recovery from wastewater","authors":"Debajyoti Bose ,&nbsp;Riya Bhattacharya ,&nbsp;M. Gopinath ,&nbsp;Abhijeeta Sarkar ,&nbsp;Ravindra Singh Pandya ,&nbsp;Apurva Jaiswal","doi":"10.1016/j.scenv.2025.100266","DOIUrl":"10.1016/j.scenv.2025.100266","url":null,"abstract":"<div><div>Bioelectricity generation from degradation of contaminants is the central premise for Microbial fuel cell or MFC operation. There has been a logarithmic increase in the refinement of MFC architecture that can support stable microbial biofilms over the years. In this work the advances with MFCs are covered with their design aspects. An overview is presented of the electrodes used in such systems with the capacity for contamination removal and bioelectricity production. Additionally, the importance of exoelectrogens in facilitating extracellular electron transfer mechanisms is evaluated. Further the factors, such as pH influencing proton transfer with temperature influencing microbial kinetics is also covered. The importance of biofilm formation in both synthetic and real time wastewater is analysed with the help of the MFC reactor design and the capacity of the cathode to act as a terminal electron acceptor. The cost analysis of MFC technologies with anaerobic digesters shows some profitable aspect which can be further improvised through mathematical models. Designing robust MFC systems adaptable to varying wastewater conditions is critical for advancing practical applications and achieving sustainable energy recovery.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"11 ","pages":"Article 100266"},"PeriodicalIF":0.0,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green nanomaterial-based sustainable analysis of contaminant-remediation in wastewater: A bird’s-eye view on recent advances and limitations","authors":"Prem Rajak","doi":"10.1016/j.scenv.2025.100238","DOIUrl":"10.1016/j.scenv.2025.100238","url":null,"abstract":"<div><div>Wastewater released from domestic and industrial sources contains a variety of contaminants that are of emerging concern. Conventional wastewater treatment methods, such as filtration, heat treatment, and oxidation, are effective in degrading many such contaminants. However, these traditional methods can be expensive, require large land areas, produce significant amounts of sludge, and have limited capacity for handling waste. Additionally, conventional techniques often lead to incomplete mineralization of contaminants, raising concerns about potential environmental contamination with toxic substances and their impacts on ecosystems. Therefore, developing more effective methods for treating wastewater contaminants is essential to address the growing challenges in wastewater management. Green nanotechnology offers several advantages for the detection and degradation of various contaminants, including heavy metals, pesticides, plastics, pharmaceutical residues, and radioactive waste. The fabrication of green nanomaterials are cost-effective, non-toxic, and ecofriendly. They can be employed for the treatment of wastewater. There is increasing evidence that plant extracts, microbial enzymes, and other biogenic products such as algae and fungi can efficiently reduce metal ions to fabricate nanomaterials, which demonstrate improved photocatalytic and adsorption capabilities. Furthermore, nanomaterials offer complete degradation of contaminants under specific environmental conditions and hence have promising scopes for wastewater treatment. However, there are challenges to the widespread application of nanotechnology in wastewater treatment, such as the limited availability of raw materials, difficulties in controlling the shapes and sizes of nanoparticles, and obstacles in large-scale production.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100238"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial for the Special Issue “Advances in adsorption and surface phenomena towards sustainable development and environmental remediation”","authors":"Nancy Elizabeth Dávila Guzmán,&nbsp;Adrian Bonilla-Petriciolet,&nbsp;Dimitrios A. Giannakoudakis","doi":"10.1016/j.scenv.2025.100245","DOIUrl":"10.1016/j.scenv.2025.100245","url":null,"abstract":"","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100245"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conversion of wheat straw and food waste employing insect (Hermetia illucens) larvae into biomanure and protein-lipid-rich animal feed","authors":"Anjali Mishra,&nbsp;Surindra Suthar","doi":"10.1016/j.scenv.2025.100260","DOIUrl":"10.1016/j.scenv.2025.100260","url":null,"abstract":"<div><div>Agricultural waste disposal has become a global problem, and its perilous discarding causes various issues of environmental pollution and resource inefficiency. Meanwhile, insect larvae have shown a promising ability to convert such waste substances into added-value materials. This study investigated the bioconversion of wheat straw (WS) and food waste (FW) employing black soldier fly larvae (BSFL). The lignocellulosic content in WS makes it unsuitable for larval feeding, therefore, we pre-treated WS with white-rot fungi for 28 days and then utilized it for larval feeding after mixing with FW in different ratios (25, 50, 75 and 100 %). Fungal pre-treatment caused a significant reduction in component loss (lignin, 30.41 %; cellulose, 16.05 %; hemicellulose, 17.86 %), making it suitable for BSFL feeding. BSFL showed a high relative growth rate (0.21 – 1.17 %), bioconversion rate (7.88 – 40.85 %), waste reduction index (7.69 – 13.79 %) and feed conversion ratio (1.33 – 2.72 %) in feed mixtures with 50 – 75 % WS. Harvested BSFL biomass exhibited (dry biomass basis) high protein N (3.6–4.7 %) and lipid (14.13 – 37.2 %) in different feed mixtures, suggesting its suitability as animal feed. The spent waste (larvae frass) exhibited a high content of nitrogen (1.70 – 2.03 %), total phosphorus (5.95 – 9.65 %), and potassium (0.74 – 1.81 %), suggesting its feasibility as manure for crop applications. In conclusion, BSFL could be a valuable tool for the bioconversion of WS and FW into nutrient-rich animal biomass and manure, as well under a waste-to-wealth approach.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100260"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable separation technologies for heavy metal removal from wastewater: An upgraded review of physicochemical methods and its advancements","authors":"Saghya Infant Shofia,&nbsp;A.S. Vickram,&nbsp;A. Saravanan,&nbsp;V.C. Deivayanai,&nbsp;P.R. Yaashikaa","doi":"10.1016/j.scenv.2025.100264","DOIUrl":"10.1016/j.scenv.2025.100264","url":null,"abstract":"<div><div>This study comprehensively evaluates both physical and chemical methods for removing heavy metals from wastewater, assessing their efficiency, cost-effectiveness, and sustainability. Traditional techniques such as adsorption, coagulation-flocculation, chemical precipitation, membrane filtration, ion exchange, and electrochemical methods are widely used due to their rapid action and reliability. However, challenges such as high operational costs, secondary waste generation, and limited selectivity necessitate the exploration of more sustainable alternatives. A key novelty of this review lies in its in-depth analysis of emerging remediation technologies, including advanced electrochemical treatments, bioadsorbents, and hybrid approaches. The study highlights recent breakthroughs in nanomaterial-based adsorbents, which offer high adsorption capacities (e.g., graphene oxide with &gt;90 % removal efficiency for Pb(II) and Cd(II)) and improved regeneration potential. Based on the comprehensive literature study, this review emphasizes the need to shift from synthetic wastewater studies to real-world industrial effluents, ensuring practical applicability. Future research should prioritize eco-friendly, cost-efficient materials with high selectivity and recyclability, such as biopolymer-based flocculants and functionalized membranes. This review provides valuable insights for optimizing heavy metal removal strategies, aligning with global environmental goals and sustainable water treatment advancements.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100264"},"PeriodicalIF":0.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimum usage of biochar derived from agricultural biomass in removing organic pollutant present in pharmaceutical wastewater","authors":"L. Soundari,&nbsp;K. Prasanna","doi":"10.1016/j.scenv.2025.100259","DOIUrl":"10.1016/j.scenv.2025.100259","url":null,"abstract":"<div><div>The wastewater from pharmaceutical industries contains high concentrations of organic matter, toxic chemicals, and salts, which must be effectively treated before disposal. In this work, the low-cost adsorbents and biochar consortium derived from coir fiber, Moringa oleifera seeds, and groundnut shells were utilized to remove organic contaminants such as BOD from pharmaceutical effluent using a column adsorption study having an initial concentration of 443.6 mg/L. The raw adsorbent consortium was prepared by mixing the powdered components in a 1:1:1 ratio. Each element was then individually pyrolyzed at different temperatures to obtain biochar at a 1:1:1 ratio. The removal efficiency for BOD using the raw consortium was 50.6 % at an optimal dosage of 60 g, pH 7, temperature 25°C, and contact time 120 min, while the biochar consortium achieved 72.1 % removal efficiency at an optimal dosage of 35 g, pH 7, temperature 25°C, and contact time 90 min. The applicability of the Langmuir and Freundlich isotherm models for BOD removal efficiency was tested. Langmuir isotherm plots indicate that the adsorption process is favorable and best fitted for the biochar consortium. From kinetic models, the biochar consortium R² value is 0.9397 (Pseudo first-order) and 0.9642 (Pseudo second-order kinetics). R² of 0.9642 indicates a better fit, with only 3.58 % of the variation unexplained. It is observed that biochar has a higher removal efficiency towards BOD-causing organic pollutants compared to the raw adsorbent consortium.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100259"},"PeriodicalIF":0.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phosphorus recovery from beef slaughterhouse wastewater by electrocoagulation process","authors":"Samomssa Inna ,&nbsp;Embolo Appolonie Rénée Natacha ,&nbsp;Massai Harouna ,&nbsp;Kamga Richard","doi":"10.1016/j.scenv.2025.100263","DOIUrl":"10.1016/j.scenv.2025.100263","url":null,"abstract":"<div><div>Nitrogen to phosphorus ratio imbalance in natural fertilizer are gaining more and more interest both in science and industry due to eutrophication caused by phosphorus excess. The goal of this study was the phosphorus recovery from Adamawa slaughterhouse wastewater by electrocoagulation (EC) process using iron and aluminum electrodes separately. To achieve this objective, screening and optimization experimental designs were used to determine the optimum conditions of phosphorus recovery from slaughterhouse wastewater by EC process. The results showed that, the order of importance of the parameters that influence the EC process differed depending on the iron and aluminum electrodes. For the iron electrodes, the order of importance in descending order was pH, stirring speed, inter-electrode distance, effluent volume, current intensity, N₂ sparging time, retention time while, for the aluminum electrodes, the order was effluent volume, retention time, pH, inter-electrode distance, current intensity, N₂ sparging time and stirring speed. Optimization of the EC process with iron electrodes revealed that recovery of 100 % of phosphorus was observed under optimal operating conditions: pH= 3, stirring speed= 600 rpm, inter-electrode distance= 1.5 cm, effluent volume= 0.5 L, current intensity= 100 mA/cm², retention time= 2h15 min while, with aluminum electrodes, a P recovery of 100 % was observed at optimum conditions effluent volume= 1 L, retention time= 30 min, pH= 14, inter-electrode distance= 1 cm, current intensity= 300 mA/cm², and stirring speed= 900 rpm. In view of the obtained results, the recovery of P in slaughterhouse effluent by EC process would be a local solution to face the high cost of fertilizers and by then to sustain environment.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100263"},"PeriodicalIF":0.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unique properties of novel feedstock Pterygota alata seed oil: A cleaner approach for biodiesel and bio-lubricant perspectives","authors":"Surekha Kademani ,&nbsp;Kariyappa S. Katagi ,&nbsp;Mahesh Akki ,&nbsp;Ashwini Jaggal","doi":"10.1016/j.scenv.2025.100262","DOIUrl":"10.1016/j.scenv.2025.100262","url":null,"abstract":"<div><div>This study evaluates <em>Pterygota alata</em> seed oil (PASO) as a sustainable feedstock for biodiesel and bio-lubricant applications. Physicochemical analysis revealed its high viscosity index (155), kinematic viscosities of 65 mm²/s (at 40°C) and 14 mm²/s (at 100°C), flash point (200°C), fire point (240°C), and pour point (18.5°C), outperforming conventional bio-lubricants like <em>Milletia pinnata</em> seed oil, rice bran oil, and mineral SAE40 engine oil. Biodiesel was synthesized via an optimized <em>in situ</em> transesterification process, eliminating separate oil extraction and esterification steps. The optimal conditions includes 6:1 methanol-to-oil ratio, 1.5 % KOH catalyst, 65°C, 600 rpm, and 3 hour reaction, achieved 95 % yield. Further characterizated using GC-MS FID, FT-IR, ¹H NMR, ¹³C NMR, and TGA validated its composition and thermal stability. Empirical analysis confirmed ASTM D6751 and EN 14214 compliance, demonstrating fuel properties comparable to petro-diesel. A cost estimation analysis indicated economic feasibility. The study highlights PASO’s potential as a high performance bio-lubricant and a cost effective biodiesel feedstock, offering a sustainable pathway for renewable energy and lubricant production. The estimated cost of one litre of biodiesel by in situ method is 78.7 INR, which shows the considerable markatable feasibility.</div></div>","PeriodicalId":101196,"journal":{"name":"Sustainable Chemistry for the Environment","volume":"10 ","pages":"Article 100262"},"PeriodicalIF":0.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}